Hi everyone,
I have a problem that's had me stuck for a few hours now. I'll start with an overview of the system. Each each record in table1 has a unique four character (alpha-numeric) code to identify it. The first two numbers of this code represent the group it is in. (Ie. 15AB and 1502 are both grouped together) The second table stores values that apply to the entire group. I need to create a relationship between these two tables based on the first two characters in the ID field.
Things I've tried:
* Making a calculated field with left$() formula - Access doesn't allow relationships on calculated fields
* Create a new field for just the first two characters and create a data macro for after update and after insert to update that field with the expression - cannot edit the field the user is on
Does anyone know how I can accomplish something like this?